CN206424892U - gas-liquid stirring device - Google Patents

Abstract

The utility model discloses a kind of gas-liquid stirring device, including frame and support, the frame is arranged at the top of agitator tank, the support is fixed in frame, reductor is installed with the frame, the input of the reductor is connected with motor, and output end is connected with agitating shaft, in addition to pre- agitating device, feed arrangement and agitator；The pre- agitating device is arranged on the bottom in agitator tank, including stator, rotor and lid, the stator is fixedly mounted on the bottom wall in agitator tank, and the bottom sidewall of stator is provided with multiple outlets, the lid is screwed at the top of stator, and lid is provided with import.The utility model causes the contact area between gas and liquid to increase, time of contact is elongated, can fully it react, improve the utilization rate of gas, so as to improve the speed of production, and the cost of production is reduced, also there is preferable mixing effect for the gas-liquid agitation under the high viscous and system that becomes sticky.

Description

Gas-liquid stirring device

technical field

The utility model relates to the technical field of stirring devices, in particular to a gas-liquid stirring device.

Background technique

Gas-liquid stirred reactors are widely used in process industries such as petroleum, chemical industry, sewage treatment, and biological fermentation. In traditional mixing and stirring devices, gas is generally added to the mixing tank and stirred by stirring blades to facilitate the mixing of gas and liquid. However, in this method of putting the gas pipe into the liquid and then stirring, the gas will form bubbles after the gas is passed in, and it will float quickly, the contact area with water is small, and the contact time is short, so the gas utilization rate is not high. lead to low production efficiency.

After retrieval, the utility model patent with the Chinese authorized announcement number CN204672261U and the authorized announcement date of 2015-09-30 discloses a gas-liquid mixing and stirring device, including a frame and a frame, the frame is fixed on the frame, and the A reducer is fixedly installed on the frame, the input end of the reducer is connected with a motor, and the output end is connected with a stirring shaft. The inside of the stirring shaft is hollow. A curved-blade stirrer, the bottom end of the stirring shaft is located at the center of the disc turbine-type curved-blade stirrer, and is provided with ventilation holes. Although it is cut into small bubbles by the agitator, the contact area and contact time with water do not change significantly when stirred and mixed under water or low-viscosity systems. Gas-liquid agitation under high-viscosity and viscous systems The effect is poor, the yield is low, and there will be insufficient stirring.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, an object of the utility model is to propose a gas-liquid stirring device, so that the contact area between the gas and the liquid increases, and the contact time becomes longer, so that it can fully react and improve the utilization rate of the gas, thereby improving The speed of production is improved, and the cost of production is reduced. It also has a good stirring effect for gas-liquid stirring in high-viscosity and variable-viscosity systems.

A gas-liquid stirring device according to an embodiment of the present invention includes a frame and a frame, the frame is arranged on the top of the stirring tank, the frame is fixed on the frame, and a speed reducer is fixedly installed on the frame. machine, the input end of the reducer is connected with a motor, and the output end is connected with a stirring shaft, and also includes a pre-stirring device, a feeding device and an agitator;

The pre-stirring device is arranged at the bottom of the stirring tank, including a stator, a rotor and a cover body, the stator is fixedly installed on the bottom wall of the stirring tank, and a plurality of outlets are arranged on the bottom side wall of the stator, and the cover The body is fixed on the top of the stator by screws, the cover is provided with an inlet, the rotor is arranged inside the stator and connected to the stirring shaft, and the side wall of the rotor is provided with a plurality of vertically arranged grooves;

The output end of the feeding device is connected to the inlet of the cover body, including a Venturi jet tube, and the Venturi jet tube is provided with a liquid inlet and a gas inlet;

The stirrer is a ribbon stirrer connected with the stirring shaft above the cover.

In some embodiments of the present utility model, the cross section of the stator is concave.

In some embodiments of the present utility model, the plurality of outlets provided on the bottom side wall of the stator are arranged in an annular array.

In some embodiments of the present utility model, the plurality of grooves provided on the side wall of the rotor are arranged in an annular array.

In other embodiments of the present utility model, the liquid inlet is connected to the main pipe of the Venturi jet tube, and the gas inlet is connected to the branch pipe of the Venturi jet tube.

In the utility model, the gas and liquid are preliminarily mixed and injected into the pre-stirring device through the Venturi injection tube, and the gas-liquid is pre-mixed through the cooperation of the rotor rotation and the stator, and the pre-mixed gas-liquid enters through multiple outlets on the stator In the mixing tank, the ribbon stirrer is used to stir again, so that the contact area between the gas and the liquid increases, and the contact time becomes longer, so that it can fully react, improve the utilization rate of the gas, and thus increase the production rate. And reduce the cost of production, it also has a better stirring effect for gas-liquid stirring in high-viscosity and variable-viscosity systems.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the structural representation of a kind of gas-liquid stirring device that the utility model proposes;

Fig. 2 is a cross-sectional schematic diagram of a pre-stirring device;

Figure 3 is a schematic structural view of the feeding device.

In the figure: 1 frame, 2 frame, 3 stirring tank, 4 reducer, 5 motor, 6 stirring shaft, 7 stator, 8 rotor, 9 cover, 10 outlet, 11 groove, 12 Venturi jet tube, 13 Liquid inlet, 14 gas inlet, 15 ribbon stirrer.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Examples of the described embodiments are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Referring to Figures 1-3, a gas-liquid stirring device includes a frame 1 and a frame 2, the frame 1 is arranged on the top of the stirring tank 3, the frame 2 is fixed on the frame 1, and the frame 1 is fixedly installed with a reducer 4, the input end of the reducer 4 is connected with a motor 5, and the output end is connected with a stirring shaft 6, and also includes a pre-stirring device, a feeding device and an agitator, wherein the motor 5 and the reducer 4 The models are Y315S-2, SAZ97R57;

The pre-stirring device is arranged on the bottom of the mixing tank 3, including a stator 7, a rotor 8 and a cover body 9, the stator 7 is fixedly installed on the bottom wall of the mixing tank 3, and the bottom side wall of the stator 7 is provided with a plurality of outlets 10 , the cover body 9 is fixed on the top of the stator 7 by screws, the cover body 9 is provided with an inlet, the rotor 8 is arranged inside the stator 7 and connected with the stirring shaft 6, the bottom end of the stirring shaft 6 passes through the cover body 9, and the side of the rotor 8 The wall is provided with a plurality of vertically arranged grooves 11. Specifically, in this embodiment, the number of outlets 10 is 7, and the number of grooves 11 is 5. The rotor 8 rotates to stir and mix, and then passes through the stator 7. A plurality of outlets 10 enter the stirring tank 3;

The output end of the feeding device is connected to the inlet of the cover body 9, including a Venturi injection pipe 12, and the Venturi injection pipe 12 is provided with a liquid inlet 13 and a gas inlet 14;

The stirrer is a ribbon stirrer 15, which is connected with the stirring shaft 6 positioned above the cover body 9, and the stirring shaft 6 is positioned at the axial position of the ribbon stirrer 15, and the ribbon stirrer 15 can rotate with the stirring shaft 6. It also has a good stirring effect for gas-liquid stirring in high-viscosity and viscous systems.

In some embodiments of the present invention, the cross section of the stator 7 is concave, cooperates with the cover body 9 to form a cavity, and the rotor is arranged in the cavity.

In some embodiments of the present invention, the seven outlets 10 provided on the bottom side wall of the stator 7 are arranged in an annular array.

In some embodiments of the present invention, the five grooves provided on the side wall of the rotor 8 are arranged in an annular array.

In other embodiments of the present invention, the liquid inlet 13 is connected to the main pipe of the Venturi jet tube 12 , and the gas inlet 14 is connected to the branch pipe of the Venturi jet tube 12 .

The principle of Venturi jet tube 12 is: when gas or liquid flows in the Venturi tube, at the narrowest point of the pipe, the dynamic pressure (velocity head) reaches the maximum value, and the static pressure (rest pressure) reaches the minimum value. Gas ( The velocity of the liquid) increases due to the reduction of the flow cross-sectional area. The entire gushing flow undergoes a narrowing of the pipe at the same time, so the pressure also decreases at the same time. In turn, a pressure difference is generated, which is used to measure or provide an external suction to the fluid, so that the incoming gas mixes with the liquid and ejects.

When in use, the gas and liquid are initially mixed and injected into the pre-stirring device through the Venturi injection tube 12, and the gas-liquid is pre-mixed through the rotation of the rotor 8 and the stator 7. The outlet enters the stirring tank 3, and is stirred again by the ribbon stirrer 15, so that the contact area between the gas and the liquid increases, and the contact time becomes longer, so that it can fully react, improve the utilization rate of the gas, and thereby improve the The speed of production and the reduction of production costs also have a good stirring effect for gas-liquid stirring in high-viscosity and variable-viscosity systems.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. A gas-liquid stirring device, comprising a frame and a support, the frame is arranged on the top of the mixing tank, the support is fixed on the frame, and a speed reducer is fixedly installed on the frame, and the speed reducer The input end of the machine is connected with a motor, and the output end is connected with a stirring shaft, which is characterized in that it also includes a pre-stirring device, a feeding device and an agitator; The pre-stirring device is arranged at the bottom of the stirring tank, including a stator, a rotor and a cover body, the stator is fixedly installed on the bottom wall of the stirring tank, and a plurality of outlets are arranged on the bottom side wall of the stator, and the cover The body is fixed on the top of the stator by screws, the cover is provided with an inlet, the rotor is arranged inside the stator and connected to the stirring shaft, and the side wall of the rotor is provided with a plurality of vertically arranged grooves; The output end of the feeding device is connected to the inlet of the cover body, including a Venturi jet tube, and the Venturi jet tube is provided with a liquid inlet and a gas inlet; The stirrer is a ribbon stirrer connected with the stirring shaft above the cover. 2. A gas-liquid stirring device according to claim 1, characterized in that: the cross section of the stator is concave. 3. A gas-liquid stirring device according to claim 2, characterized in that: the plurality of outlets provided on the bottom side wall of the stator are arranged in an annular array. 4. A gas-liquid stirring device according to claim 1, characterized in that: the plurality of grooves on the side wall of the rotor are arranged in a circular array. 5. A gas-liquid stirring device according to claim 1, characterized in that: the liquid inlet is connected to the main pipe of the Venturi jet tube, and the gas inlet is connected to the branch pipe of the Venturi jet tube.